{
  "spec_version": "3",
  "endpoint": "decisions",
  "stock_code": "5108",
  "company_name": "ブリヂストン",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/5108/",
  "api_url": "/api/5108/decisions.json",
  "updated": "2026-08-05",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/5108/",
  "count": 4,
  "description": "Index of this company's management decisions. One decision = one endpoint: follow api_url for the full dossier (background, the decision itself, outcome, quoted primary sources and references).",
  "decisions": [
    {
      "slug": "founding-1931",
      "url": "/tse/5108/decisions/founding-1931/",
      "api_url": "/api/5108/decisions/founding-1931.json",
      "year": 1931,
      "month": 3,
      "type": "founding",
      "title": "ブリヂストン創業——久留米の足袋商から国産自動車タイヤメーカーへ",
      "subtitle": "地下足袋でゴム加硫技術を蓄えた42歳・石橋正二郎氏は、日本足袋のタイヤ部をどう国産自動車タイヤ専業メーカーへ独立させたか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "firestone-acquisition-1988",
      "url": "/tse/5108/decisions/firestone-acquisition-1988/",
      "api_url": "/api/5108/decisions/firestone-acquisition-1988.json",
      "year": 1988,
      "month": 2,
      "type": "acquisition",
      "tags": [
        "ma-crossborder-out",
        "gl-expansion"
      ],
      "title": "米ファイアストンの買収と世界一への跳躍",
      "subtitle": "国際化の機会に、ブリヂストンはいくらまで払えたのか——ピレリとの競り合いを制した26億ドル",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "firestone-recall-2001",
      "url": "/tse/5108/decisions/firestone-recall-2001/",
      "api_url": "/api/5108/decisions/firestone-recall-2001.json",
      "year": 2001,
      "month": null,
      "type": "misconduct",
      "tags": [
        "tr-scandal",
        "gl-expansion"
      ],
      "title": "米ファイアストンの欠陥タイヤ問題と大規模自主回収",
      "subtitle": "権限を委ねた海外子会社のリスクは、なぜ親会社ブリヂストンのトップに届かなかったか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "portfolio-reform-2020",
      "url": "/tse/5108/decisions/portfolio-reform-2020/",
      "api_url": "/api/5108/decisions/portfolio-reform-2020.json",
      "year": 2020,
      "month": null,
      "type": "divestiture",
      "tags": [
        "pf-focus",
        "pf-exit"
      ],
      "title": "非タイヤ・非中核事業の一斉売却とタイヤ×ソリューションへの資源集中",
      "subtitle": "多角化で広げた事業をなぜ手放したのか——石橋秀一体制が掲げた「ブリヂストン3.0」の選択と集中",
      "status": "implemented",
      "status_label": "実施"
    }
  ],
  "by_type": [
    {
      "key": "acquisition",
      "count": 1,
      "url": "/api/5108/decisions/by-type/acquisition.json"
    },
    {
      "key": "divestiture",
      "count": 1,
      "url": "/api/5108/decisions/by-type/divestiture.json"
    },
    {
      "key": "founding",
      "count": 1,
      "url": "/api/5108/decisions/by-type/founding.json"
    },
    {
      "key": "misconduct",
      "count": 1,
      "url": "/api/5108/decisions/by-type/misconduct.json"
    }
  ],
  "by_decade": [
    {
      "key": "1930s",
      "count": 1,
      "url": "/api/5108/decisions/by-decade/1930s.json"
    },
    {
      "key": "1980s",
      "count": 1,
      "url": "/api/5108/decisions/by-decade/1980s.json"
    },
    {
      "key": "2000s",
      "count": 1,
      "url": "/api/5108/decisions/by-decade/2000s.json"
    },
    {
      "key": "2020s",
      "count": 1,
      "url": "/api/5108/decisions/by-decade/2020s.json"
    }
  ]
}